<!DOCTYPE html>
<html lang="zh">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Component 标签</title>
  <script src="../assets/js/vue.js"></script>
</head>

<body>
  <h1>Component 标签</h1>
  <hr>
  <div id="app">
    <component v-bind:is="who"></component>
    <button @click="changeComponent">changeComponent</button>
  </div>
  <script type="text/javascript">
    var componentA = {
      template: `<div style="color:red;">I'm componentA.</div>`
    }
    var componentB = {
      template: `<div style="color:green;">I'm componentB.</div>`
    }
    var componentC = {
      template: `<div style="color:pink;">I'm componentC.</div>`
    }
    var app = new Vue({
      el: '#app',
      data: {
        who: 'componentA'
      },
      components: {
        "componentA": componentA,
        "componentB": componentB,
        "componentC": componentC,
      },
      methods: {
        changeComponent: function () {
          if (this.who == "componentA") {
            this.who = "componentB";
          } else if (this.who == "componentB") {
            this.who = "componentC";
          } else {
            this.who = "componentA";
          }
        }
        
      }
    })
  </script>
</body>

</html>